Biology, 14.12.2019 20:31, 20jmurphy82
The theory of endosymbiosis suggests that chloroplasts and mitochondria were once free-living prokaryotes, that were engulfed by larger prokaryotic cells. eventually, this relationship lead to the development of eukaryotic cells with cellular organelles. these organelles included mitochondria, and in some cases, chloroplasts.
Answers: 2
Biology, 22.06.2019 04:30, dondre54
African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.
Answers: 2
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